Now showing items 1-2 of 2
Implications of long-term superphosphate applications on the accumulation and plant availability of soil phosphorus under irrigated pastures
(New Zealand Grassland Association., 1990)
Changes in soil phosphorus (P) associated with the establishment and maintenance of improved ryegrass-clover pasture under different superphosphate fertiliser treatments were examined over a 20-year period (1957-77). Results ...
Critical evaluation of methods for determining total organic phosphorus in tropical soils
(Soil Science Society of America, 1990)
The determination of total organic phosphorus (TOP) in soils presents several methodological problems, particularly on strongly weathered and tropical soils. We reviewed the application of several methods for TOP determination ...